TREE.NB 12-inch MacBook A1527/A1534 Replacement Battery — 72Wh 10.8V, 6-Cell (2015–2017)

TREE.NB replacement battery A1527/A1534 is a drop-in power module engineered to restore full runtime for 12-inch Retina MacBook models released 2015–2017.

If your 12-inch MacBook has shortened battery life, won’t hold a charge, or shows a depleted battery condition, this TREE.NB unit is made to match the original specifications and compatible part numbers so you can replace the worn cell pack yourself or with technician help. The pack is rated at 10.8V and 72Wh, built from six cells and specified for up to about 500 recharge cycles when used under normal conditions. It replaces OEM references including A1534, A1527, A1705 and several EMC and Apple part numbers listed for the Early 2015, Early 2016, and Mid 2017 models.

Which MacBook models and part numbers does this battery replace?

This battery covers 12-inch Retina MacBook A1534 variations across the 2015–2017 releases and maps to multiple Apple part numbers and EMC codes. It is intended for specific SKUs and system identifiers Apple sold for those years.

• Compatible part numbers: A1534, A1527, A1705, 613-01923, 661-02267, 613-01926.
• EMC variants: EMC 2991, EMC 2746, EMC 3099.
• Model years: Early 2015, Early 2016, Mid 2017 MacBook 12-inch (A1534).
• Included Apple SKUs: MK4M2LL/A, MF855LL/A, MLHA2LL/A, MNYG2LL/A and others listed for those releases.

How does the battery perform and what are the key specs?

The TREE.NB pack matches the original power profile to ensure stable operation and correct battery reporting inside macOS. It uses a six-cell configuration and is specified for a typical laptop battery lifecycle.

• Voltage: 10.8V for native compatibility with the MacBook power system.
• Capacity: 72Wh to restore typical runtime comparable to original Apple packs.
• Cell count: 6 cells assembled for balanced power delivery.
• Cycle life: Designed for up to ~500 charge cycles under normal usage patterns.

What should I consider before replacing the battery myself?

Replacing the internal battery in a 12-inch MacBook requires care because the chassis is compact and components are delicate. If you’re comfortable with small electronics and have the right tools, replacement is straightforward; otherwise choose a qualified technician.

• Backup your data and power down before beginning work.
• Use proper Pentalobe/Torx screwdrivers and a plastic pry tool to avoid damage.
• Follow an up-to-date teardown guide for your exact model number (A1534 variants vary slightly by year).
• If unsure, ask a certified repair shop to install and recycle the old battery safely.

What warranty and customer support does TREE.NB provide?

TREE.NB offers ongoing email support and a seller contact channel for pre- and post-sale questions so you can confirm fitment and get installation help. Customer service aims to respond promptly to compatibility or performance inquiries.

• 24/7 email assistance via the seller store contact link.
• Support for troubleshooting installation and battery recognition issues.
• Guidance to confirm Apple model numbers and EMC codes before purchase.

Who is this for? This replacement battery is suited for owners of the 12-inch Retina MacBook (model A1534) from Early 2015 through Mid 2017 who need to restore original run time without replacing the whole machine. It’s also for repair technicians and DIY users who want a direct-fit, spec-matching pack with clear compatibility to common Apple part numbers and EMC codes. If you prioritize correct voltage, original-style capacity, and documented model compatibility, this TREE.NB A1527/A1534 battery is built to meet those requirements.